diff --git a/CHANGELOG.md b/CHANGELOG.md
index 972c14b6b2..362308a69b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 # CHANGELOG
 
-## master
+## 6.11.1 Dec 5, 2021
+
+Upgrade priority: Low. Maintenance upgrade, tacking the latest `@polkadot` libraries.
 
 Changes:
 
diff --git a/package.json b/package.json
index 422b0b8ac4..695dabbd56 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   },
   "sideEffects": false,
   "type": "commonjs",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "workspaces": [
     "packages/*"
   ],
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index 1e45091184..e3f534cf34 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -20,12 +20,12 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.3",
-    "@polkadot/api": "6.10.4-4",
-    "@polkadot/types": "6.10.4-4",
+    "@polkadot/api": "6.11.0",
+    "@polkadot/types": "6.11.0",
     "@polkadot/util": "^8.1.2",
     "rxjs": "^7.4.0"
   }
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index 46cbe11f48..19c3341334 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -20,19 +20,19 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.3",
-    "@polkadot/api": "6.10.4-4",
-    "@polkadot/rpc-core": "6.10.4-4",
-    "@polkadot/types": "6.10.4-4",
+    "@polkadot/api": "6.11.0",
+    "@polkadot/rpc-core": "6.11.0",
+    "@polkadot/types": "6.11.0",
     "@polkadot/util": "^8.1.2",
     "@polkadot/util-crypto": "^8.1.2",
     "rxjs": "^7.4.0"
   },
   "devDependencies": {
     "@polkadot/keyring": "^8.1.2",
-    "@polkadot/rpc-provider": "6.10.4-4"
+    "@polkadot/rpc-provider": "6.11.0"
   }
 }
diff --git a/packages/api/package.json b/packages/api/package.json
index fd94ad14f5..0c20c60e99 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -20,16 +20,16 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.3",
-    "@polkadot/api-derive": "6.10.4-4",
+    "@polkadot/api-derive": "6.11.0",
     "@polkadot/keyring": "^8.1.2",
-    "@polkadot/rpc-core": "6.10.4-4",
-    "@polkadot/rpc-provider": "6.10.4-4",
-    "@polkadot/types": "6.10.4-4",
-    "@polkadot/types-known": "6.10.4-4",
+    "@polkadot/rpc-core": "6.11.0",
+    "@polkadot/rpc-provider": "6.11.0",
+    "@polkadot/types": "6.11.0",
+    "@polkadot/types-known": "6.11.0",
     "@polkadot/util": "^8.1.2",
     "@polkadot/util-crypto": "^8.1.2",
     "eventemitter3": "^4.0.7",
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index 7f5067ab83..e6fc191e1b 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -20,12 +20,12 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.3",
-    "@polkadot/rpc-provider": "6.10.4-4",
-    "@polkadot/types": "6.10.4-4",
+    "@polkadot/rpc-provider": "6.11.0",
+    "@polkadot/types": "6.11.0",
     "@polkadot/util": "^8.1.2",
     "rxjs": "^7.4.0"
   },
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index 28e0fe68ff..594ad604f8 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -20,11 +20,11 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.3",
-    "@polkadot/types": "6.10.4-4",
+    "@polkadot/types": "6.11.0",
     "@polkadot/util": "^8.1.2",
     "@polkadot/util-crypto": "^8.1.2",
     "@polkadot/x-fetch": "^8.1.2",
@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "@polkadot/keyring": "^8.1.2",
-    "@polkadot/types": "6.10.4-4",
+    "@polkadot/types": "6.11.0",
     "mock-socket": "^9.0.8",
     "nock": "^13.2.1"
   }
diff --git a/packages/typegen/package.json b/packages/typegen/package.json
index acdb9cd2ab..fc96e4abe4 100644
--- a/packages/typegen/package.json
+++ b/packages/typegen/package.json
@@ -20,7 +20,7 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "bin": {
     "polkadot-types-chain-info": "./scripts/polkadot-types-chain-info.cjs",
@@ -33,10 +33,10 @@
     "@babel/core": "^7.16.0",
     "@babel/register": "^7.16.0",
     "@babel/runtime": "^7.16.3",
-    "@polkadot/api": "6.10.4-4",
-    "@polkadot/rpc-provider": "6.10.4-4",
-    "@polkadot/types": "6.10.4-4",
-    "@polkadot/types-support": "6.10.4-4",
+    "@polkadot/api": "6.11.0",
+    "@polkadot/rpc-provider": "6.11.0",
+    "@polkadot/types": "6.11.0",
+    "@polkadot/types-support": "6.11.0",
     "@polkadot/util": "^8.1.2",
     "handlebars": "^4.7.7",
     "websocket": "^1.0.34",
diff --git a/packages/types-known/package.json b/packages/types-known/package.json
index e8f13de30f..b9937e75b7 100644
--- a/packages/types-known/package.json
+++ b/packages/types-known/package.json
@@ -20,12 +20,12 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.3",
     "@polkadot/networks": "^8.1.2",
-    "@polkadot/types": "6.10.4-4",
+    "@polkadot/types": "6.11.0",
     "@polkadot/util": "^8.1.2"
   }
 }
diff --git a/packages/types-support/package.json b/packages/types-support/package.json
index 6898d0ba4c..002be0dbeb 100644
--- a/packages/types-support/package.json
+++ b/packages/types-support/package.json
@@ -20,7 +20,7 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.3",
diff --git a/packages/types/package.json b/packages/types/package.json
index af94896aa4..6f61715609 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -20,18 +20,18 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.10.4-4",
+  "version": "6.11.0",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.16.3",
-    "@polkadot/types-known": "6.10.4-4",
+    "@polkadot/types-known": "6.11.0",
     "@polkadot/util": "^8.1.2",
     "@polkadot/util-crypto": "^8.1.2",
     "rxjs": "^7.4.0"
   },
   "devDependencies": {
     "@polkadot/keyring": "^8.1.2",
-    "@polkadot/types-support": "6.10.4-4",
+    "@polkadot/types-support": "6.11.0",
     "@types/bn.js": "^4.11.6",
     "bn.js": "^4.12.0"
   }
diff --git a/yarn.lock b/yarn.lock
index 84402bc0de..5d54289ad7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1859,40 +1859,40 @@ __metadata:
   resolution: "@polkadot/api-contract@workspace:packages/api-contract"
   dependencies:
     "@babel/runtime": ^7.16.3
-    "@polkadot/api": 6.10.4-4
-    "@polkadot/types": 6.10.4-4
+    "@polkadot/api": 6.11.0
+    "@polkadot/types": 6.11.0
     "@polkadot/util": ^8.1.2
     rxjs: ^7.4.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/api-derive@6.10.4-4, @polkadot/api-derive@workspace:packages/api-derive":
+"@polkadot/api-derive@6.11.0, @polkadot/api-derive@workspace:packages/api-derive":
   version: 0.0.0-use.local
   resolution: "@polkadot/api-derive@workspace:packages/api-derive"
   dependencies:
     "@babel/runtime": ^7.16.3
-    "@polkadot/api": 6.10.4-4
+    "@polkadot/api": 6.11.0
     "@polkadot/keyring": ^8.1.2
-    "@polkadot/rpc-core": 6.10.4-4
-    "@polkadot/rpc-provider": 6.10.4-4
-    "@polkadot/types": 6.10.4-4
+    "@polkadot/rpc-core": 6.11.0
+    "@polkadot/rpc-provider": 6.11.0
+    "@polkadot/types": 6.11.0
     "@polkadot/util": ^8.1.2
     "@polkadot/util-crypto": ^8.1.2
     rxjs: ^7.4.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/api@6.10.4-4, @polkadot/api@workspace:packages/api":
+"@polkadot/api@6.11.0, @polkadot/api@workspace:packages/api":
   version: 0.0.0-use.local
   resolution: "@polkadot/api@workspace:packages/api"
   dependencies:
     "@babel/runtime": ^7.16.3
-    "@polkadot/api-derive": 6.10.4-4
+    "@polkadot/api-derive": 6.11.0
     "@polkadot/keyring": ^8.1.2
-    "@polkadot/rpc-core": 6.10.4-4
-    "@polkadot/rpc-provider": 6.10.4-4
-    "@polkadot/types": 6.10.4-4
-    "@polkadot/types-known": 6.10.4-4
+    "@polkadot/rpc-core": 6.11.0
+    "@polkadot/rpc-provider": 6.11.0
+    "@polkadot/types": 6.11.0
+    "@polkadot/types-known": 6.11.0
     "@polkadot/util": ^8.1.2
     "@polkadot/util-crypto": ^8.1.2
     eventemitter3: ^4.0.7
@@ -2013,26 +2013,26 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/rpc-core@6.10.4-4, @polkadot/rpc-core@workspace:packages/rpc-core":
+"@polkadot/rpc-core@6.11.0, @polkadot/rpc-core@workspace:packages/rpc-core":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-core@workspace:packages/rpc-core"
   dependencies:
     "@babel/runtime": ^7.16.3
     "@polkadot/keyring": ^8.1.2
-    "@polkadot/rpc-provider": 6.10.4-4
-    "@polkadot/types": 6.10.4-4
+    "@polkadot/rpc-provider": 6.11.0
+    "@polkadot/types": 6.11.0
     "@polkadot/util": ^8.1.2
     rxjs: ^7.4.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/rpc-provider@6.10.4-4, @polkadot/rpc-provider@workspace:packages/rpc-provider":
+"@polkadot/rpc-provider@6.11.0, @polkadot/rpc-provider@workspace:packages/rpc-provider":
   version: 0.0.0-use.local
   resolution: "@polkadot/rpc-provider@workspace:packages/rpc-provider"
   dependencies:
     "@babel/runtime": ^7.16.3
     "@polkadot/keyring": ^8.1.2
-    "@polkadot/types": 6.10.4-4
+    "@polkadot/types": 6.11.0
     "@polkadot/util": ^8.1.2
     "@polkadot/util-crypto": ^8.1.2
     "@polkadot/x-fetch": ^8.1.2
@@ -2060,10 +2060,10 @@ __metadata:
     "@babel/core": ^7.16.0
     "@babel/register": ^7.16.0
     "@babel/runtime": ^7.16.3
-    "@polkadot/api": 6.10.4-4
-    "@polkadot/rpc-provider": 6.10.4-4
-    "@polkadot/types": 6.10.4-4
-    "@polkadot/types-support": 6.10.4-4
+    "@polkadot/api": 6.11.0
+    "@polkadot/rpc-provider": 6.11.0
+    "@polkadot/types": 6.11.0
+    "@polkadot/types-support": 6.11.0
     "@polkadot/util": ^8.1.2
     "@types/websocket": ^1.0.4
     "@types/yargs": ^17.0.7
@@ -2079,18 +2079,18 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types-known@6.10.4-4, @polkadot/types-known@workspace:packages/types-known":
+"@polkadot/types-known@6.11.0, @polkadot/types-known@workspace:packages/types-known":
   version: 0.0.0-use.local
   resolution: "@polkadot/types-known@workspace:packages/types-known"
   dependencies:
     "@babel/runtime": ^7.16.3
     "@polkadot/networks": ^8.1.2
-    "@polkadot/types": 6.10.4-4
+    "@polkadot/types": 6.11.0
     "@polkadot/util": ^8.1.2
   languageName: unknown
   linkType: soft
 
-"@polkadot/types-support@6.10.4-4, @polkadot/types-support@workspace:packages/types-support":
+"@polkadot/types-support@6.11.0, @polkadot/types-support@workspace:packages/types-support":
   version: 0.0.0-use.local
   resolution: "@polkadot/types-support@workspace:packages/types-support"
   dependencies:
@@ -2099,14 +2099,14 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/types@6.10.4-4, @polkadot/types@workspace:packages/types":
+"@polkadot/types@6.11.0, @polkadot/types@workspace:packages/types":
   version: 0.0.0-use.local
   resolution: "@polkadot/types@workspace:packages/types"
   dependencies:
     "@babel/runtime": ^7.16.3
     "@polkadot/keyring": ^8.1.2
-    "@polkadot/types-known": 6.10.4-4
-    "@polkadot/types-support": 6.10.4-4
+    "@polkadot/types-known": 6.11.0
+    "@polkadot/types-support": 6.11.0
     "@polkadot/util": ^8.1.2
     "@polkadot/util-crypto": ^8.1.2
     "@types/bn.js": ^4.11.6